function markActiveLink(path, orderNum) {

    $(path + " a").filter(function() {

        //Take the current URL and split it into chunks at each slash
        var currentURL = window.location.toString().split("/");

        //return true if the bit after the last slash is the current page name
        return $(this).attr("href") == currentURL[currentURL.length - 1];

        //when the filter function is done, you're left with the links that match.
    }).addClass("selected");

    //Afterwards, look back through the links. If none of them were marked,
    //mark your default one.
    if ($(path + " a").hasClass("selected") == false) {
        $(path + " a:eq(" + orderNum + ")").addClass("selected");
    }
}